Latest Maths Aptitude Question SOLUTION: A motor car starts with the speed of 70 km/hr with its speed every 2 hour s by 10km/hr. inhow many hours will it cover 345km?

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A motor car starts with the speed of 70 km/hr with its speed every 2 hour s by 10km/hr. inhow many hours will it cover 345km?

Asked In Maths (10 years ago)

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Read Solution (4) :

Shantanu Khare  (9 years ago)

d=s*t
d=70*2=140, in first 2 hrs
after 2 hrs,speed is 70+10 = 80 kmph
d=80*2=160,
till now,
4 hrs and dist covered is 140+160=300km
remaining distance is 345-300=45 km
so,
to cove 45 km at an speed oh 80+10=90kmph
t=d/s
t=45/90
t=1/2
therefore total time taken is 4hrs 30 mins
d=

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rajasekar  (10 years ago)

forfirst2hrs=140kms completed
fornext2hrs=160kms
totally=300kms
remaining 45kms=.36
its4.36hrs

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Rashida kotawala  (9 years ago)

first hour=70
second hour=70
third hour=80
fourth hour=80
distance =300
in the fifth hour speed=90km/hr and distance=45km so hr=1/2
over all time=4.5hr

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kathiroli velu  (9 years ago)

for first two hours 140 km
for next two hours 160 km
totally 140+160=300
remaining 45 km
for next two speed will be 90
there fore for 45 km 30 mts enough

to cover 345 km car takes 4hrs 30 mts to reach

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